1.Cultivation of the Isolated Bovine Endometrial Stromal Cells and the Effect of Interleukin - 2 on Its Proliferation.
Dong Mok LEE ; Hai Bum SONG ; Kyung Soo NAM
Korean Journal of Immunology 1998;20(1):55-60
At the time in vitro fertilization and embryo transfer, patients with unsuitable endometrium recovered by hormone. However, the overtreatment of hormone causes indispositionly the uterus internal secretion and finally induces endometriosis. Therefore, this study was done to inverstigate the effects of interleukin-2, which was known to differentiator and proliferator of T cells, on proliferation of the endometrial stromal cells in vitro. We have exammined the effects of interleukin-2, on the proliferation of bovine endometrial stromal cells in vitro, assessed by ['H]-thymidine incorporation and MTT assay methods. Results indicate that we isolated endometrial stromal cells from bovine uterus and established in vitro culture system. And interleukin-2 showed distint stimulatory effect on proliferation of the established stromal cells. These stimulative effects were not affected by estrogen and progesterone indirectly. In conclusion, these data imply that interleukin-2 may proliferate bovine endometrial stromal, cells, and it provides clue for understanding of direct actions of cytokines on the endometriat cells.
Cytokines
;
Embryo Transfer
;
Endometriosis
;
Endometrium
;
Estrogens
;
Female
;
Fertilization in Vitro
;
Humans
;
Interleukin-2
;
Interleukins*
;
Progesterone
;
Stromal Cells*
;
T-Lymphocytes
;
Uterus
2.A study on the stress distribution of the all ceramic crowns according to the cusp angle of the maxillary first premolar using three dimensional finite element method.
Won Kyu KIM ; Dong Kuk SHIN ; Kie Bum SONG ; Jin Keun DONG
The Journal of Korean Academy of Prosthodontics 2004;42(1):58-72
STATEMENT OF PROBLEM: Clinically, maxillary first premolar has a high risk of fracture. This is thought to be caused by the susceptible figure which the maxillary first premolar has. In other words, sharp cusp angles of the premolar is thought to influence this situation. PURPOSE: This study was to know stress distribution of all-ceramic crown according to the cusp angle. MATERIAL AND METHOD: It was manufactured a three dimensional finite element model simplified maxillary first premolar, and then analyzed stress distribution when cusp angle was each 80 degrees, 90 degrees, 100 degrees, 110 degrees and 120 degrees. RESULTS AND CONCLUSION: 1. The von Misses stress showed that stress decreases as cusp angle increases in the central groove of the occlusal surface. 2. It showed that maximum principal stress was centered at the region of the central groove of the occlusal surface and a region which the force was inflicted. And also it appeared high on the lingual and buccal side of finish line. 3. The X axis of normal stress was focused in the central groove of the occlusal surface. The Y axis normal stress appeared high in the central groove of the occlusal surface, buccal and lingual side. 4. The Stress near the finish line showed a low value compared with stress in the region of the central groove of the occlusal surface. 5. It shows that the most dangerous angle for tooth fracture was on 80 degrees of the cusp angle and low on 120 degrees of its.
Axis, Cervical Vertebra
;
Bicuspid*
;
Ceramics*
;
Crowns*
;
Tooth Fractures
3.Effect of Interleukin-2 on the Surgically Induced Enndometriosis in Rat.
Kyung Soo HAHM ; Kyung Soo NAM ; Dong Mok LEE ; Hai Bum SONG ; Dong Hoon KIM ; Yun Hee SHON
Korean Journal of Immunology 1999;21(2):153-157
It has been shown that wornen with endometriosis have several immunological defects. The effect of interleukin-2 (IL-2) for the treatment of induced endometriosis in rat was studied. The results obtained are as followings: proliferation of epithelium is increased, and the inner surface is undulated with 1.5 nM IL-2. In 7.5 nM IL-2, the epithelial cells are changed to columar ones, and secretory hobs are observed at the apex of individual cell. Secretory activity of epithelium is increased with 0.5 nM IL-2, and apoptosis of the epithelial cell is observed in 15 nM IL-2. The levels of progesterone and estradiol in sera of rat were increased after treatment with IL-2 and were highest in the concentration of 1.5 nM IL-2. The results of this study can be a guide in the development of new therapeutic approaches for the treatment of endometriosis.
Animals
;
Apoptosis
;
Endometriosis
;
Epithelial Cells
;
Epithelium
;
Estradiol
;
Female
;
Interleukin-2*
;
Progesterone
;
Rats*
4.The Endovascular Management of Saccular Posterior Inferior Cerebellar Artery Aneurysms.
Ha Hun SONG ; Yoo Dong WON ; Young Joo KIM ; Bum Soo KIM
Korean Journal of Radiology 2008;9(5):396-400
OBJECTIVE: The purpose of this retrospective study was to report the outcome of the endovascular treatment of eight patients with eight saccular posterior inferior cerebellar artery (PICA) aneurysms. MATERIALS AND METHODS: Over the last seven years (1999-2006), eight consecutive patients with saccular PICA aneurysms were treated by endovascular methods. Five of the aneurysms were presented with subarachnoid hemorrhaging, whereas three were discovered incidentally. Four of the aneurysms (3 ruptured and 1 incidental) were treated by intrasaccular coiling, whereas the remaining four (1 ruptured and 3 incidental) were treated by vertebral artery (VA) occlusion. RESULTS: Of the four aneurysms treated by intrasaccular coiling, three were completely packed with coils and one was partially packed. In three of four patients who underwent vertebral artery occlusions, follow-up digital subtraction angiographies demonstrated thrombosed aneurysms and PICA. No procedure-related morbidity occurred and no re-bleed was encountered during a follow-up examination (mean; 31 months). CONCLUSION: As a result of this study, we found that the endovascular management of saccular PICA aneurysms should be considered as safe and effective.
Adult
;
Aged
;
Aneurysm, Ruptured/radiography/*therapy
;
Cerebellum/blood supply/*radiography
;
Cerebral Angiography
;
Embolization, Therapeutic/*methods
;
Female
;
Humans
;
Incidental Findings
;
Intracranial Aneurysm/radiography/*therapy
;
Male
;
Middle Aged
;
Retrospective Studies
;
Subarachnoid Hemorrhage/radiography/*therapy
;
Treatment Outcome
5.A Case of Isolated Epidermolytic Acanthoma.
In Bum SOHN ; Sang Min HWANG ; Eung Ho CHOI ; Won Soo LEE ; Dong Hoon SONG ; Sung Ku AHN
Korean Journal of Dermatology 2000;38(5):643-645
No Abstract Available.
Acanthoma*
6.Correlation between Osteoporosis and Skin Thickness on CT Scan.
Tae An KWON ; Sun Wha SONG ; Dong Hoon LEE ; Bum Jin KIM ; Yoon Hee KIM ; Young Rock SHINN ; Youn Kil KIM ; Eun Jung LEE ; Song Mee CHO ; Sang Bum SON
Journal of the Korean Radiological Society 1998;39(5):991-995
PURPOSE: The purpose of this study was to evaluate the relationship between osteoporosis and skin thicknessas shown by CT scanning. MATERIALS AND METHODS: Eighty- six women with osteoporosis (mean age, 52) and 51 normalcontrols (mean age, 50) participated in the study. For a quantitative CT examinations, a CT scanner(Somatom Plus,Siemens) was used. Osteoporosis was defined as present when spinal bone mineral density was more than 2.5 standarddeviations below young normal density, as determined by quantitative CT. Patients with endocrinologic, malignantor collagen disease and undergoing antimetabolite or steroid therapy were excluded. The thickness of back skin wasretrospectively measured at the third lumbar vertebra level, as seen on CT films, using a conventional magnifier.For statistical analysis, Students' t test and Spearman's rank correlation were used. RESULTS: On the basis of CTscans, the mean thickness of back skin in the osteoporotic group(0.50+/-0.20 mm) was significantly less than innormal control subjects(0.80+/-0.23 mm) (p<0.001). Significant correlation was observed between skin thickness andbone mineral density(r=0.523, p<0.0001). Sensitivity, specificity, accuracy, and positive and negative predictivevalues were measured as 76, 78, 76, 88, 62% with a cut-off value of 0.6 and 84, 61, 77, 81, 66% with a cut-offvalue of 0.7, respectively. CONCLUSION: The present study demonstrated that the thickness of back skin, asmeasured by CT scanning, is predictive of osteoporosis.
Bone Density
;
Collagen Diseases
;
Female
;
Humans
;
Osteoporosis*
;
Sensitivity and Specificity
;
Skin*
;
Spine
;
Tomography, X-Ray Computed*
7.Effects of Estrogen Receptor Polymorphisms on Bone Markers and Serum Lipid Levels.
Hyun Sik CHOI ; Nan Young LEE ; Dong Il WON ; Jung Bum LEE ; Jung Hup SONG ; Kyung Eun SONG
The Korean Journal of Laboratory Medicine 2003;23(4):234-241
BACKGROUND: In post-menopausal women, osteoporosis and cardiovascular diseases which are partly due to estrogen deficiency, occur more common than in pre-menopause women. Estrogen action is supposed to be mediated by an estrogen receptor (ER) and two polymorphisms of the ER gene in particular, Pvu II and Xba I, have been described for several years for genetic association studies. Authors have investigated the frequencies and patterns of the ER gene polymorphisms and their association with bone markers and lipid levels. METHODS: For 121 women who visited the health promotion center of Kyungpook National University Hospital, the ER gene polymorphisms were determined by the Pvu II and Xba I restriction enzymes following polymerase chain reaction. RESULTS: The distributions of ER Pvu II and Xba I restriction fragment length polymorphisms were as follows: PP 15.7%, Pp 47.9%, pp 36.4% and XX 5.8%, Xx 31.4%, xx 62.8%, respectively. And in a combination of two polymorphisms, ppxx was the most common, followed by PpXx, Ppxx, PPXx, PPXX and PPxx in that order. No significant genotypic differences were found in bone mineral density, bone markers and menopausal status. LDL cholesterol and triglyceride levels were significantly different by genotypes in premenopausal women (P<0.05). CONCLUSIONS: The results suggest that ER polymorphisms might be associated with LDL cholesterol and triglyceride levels. Further evaluation in a larger population would be helpful to determine the effects of ER polymorphisms on lipid metabolism and therapeutic trial for cardiovascular diseases in women.
Bone Density
;
Cardiovascular Diseases
;
Cholesterol, LDL
;
Estrogens*
;
Female
;
Genetic Association Studies
;
Genotype
;
Gyeongsangbuk-do
;
Health Promotion
;
Humans
;
Lipid Metabolism
;
Osteoporosis
;
Polymerase Chain Reaction
;
Polymorphism, Restriction Fragment Length
;
Premenopause
;
Triglycerides
8.A Case of Neurolymphomatosis Relapsed as Mononeuropathy Multiplex after Hematologic Remission.
Dong Hyun LEE ; Bum Chun SUH ; Yoseob WON ; Dong Bum SONG ; Jinkwon KIM ; Il Nam SUNWOO ; Seung Min KIM
Journal of the Korean Neurological Association 2006;24(6):601-604
Neurolymphomatosis, which is defined as a peripheral nerve infiltration of lymphoma, is an infrequent complication of systemic lymphoma and the isolated involvement of the peripheral nerve as a sign of recurrence is very rare. Here, we report a case with neurolymphomatosis presented as a mononeuropathy multiplex and is the first reported case in Korea. With potent chemotherapy, the blood-nerve barrier may have a critical role in the isolated recurrence of lymphoma in the peripheral nervous system.
Animals
;
Blood-Nerve Barrier
;
Drug Therapy
;
Korea
;
Lymphoma
;
Lymphoma, B-Cell
;
Marek Disease*
;
Mononeuropathies*
;
Peripheral Nerves
;
Peripheral Nervous System
;
Recurrence
9.Retentive force of adjustable dental impression trays with different retention forms.
Kie Bum SONG ; Sung Rok KIM ; Kwang Soo PARK ; Yu Lee KIM ; Jin Keun DONG
The Journal of Korean Academy of Prosthodontics 2005;43(1):15-29
STATEMENT OF PROBLEM: The adjustable dental impression trays were made for being adjusted their width automatically along the width of dental arch. PURPOSE: The purpose of this study was to investigate the best retentive form of adjustable dental impression tray, and so to make it a more satisfactory product. MATERIALS AND METHODS: The eight pairs of adjustable trays were made of ABS(acrylonitrile butadiene styrene) with different distribution of holes and with or without the rim on the border area of them. The experiment was done with the horse-shoe shaped metal plate to pull out the set impression body from the tray, and the tray jig which was made for holding the tray on a lower part of Universal Testing achine(UTM, Zwick Z020, Zwick Co., Germany). After the impression in the tray was allowed to set four minutes, a tensile force was applied at right angles to the tray which had been previously seated on the jig. The force was applied to measure a maximum retentive force by use of a UTM at a constant strain rate of 100mm per minute. A 2-factor analysis of variance (p<.05) was used to determine whether differences existed among distribution of retentive holes and between rim existing and not. RESULTS: 1. The retentive force of the upper and lower resin tray with 2mm holes on the tray border was highest(25.83/24.98kg).(p<.05) 2. As the tray had more retentive holes, it was less retentive. 3. There was no significant difference in the retentive force of the varied hole intervals in the case of distributing all the area.(p>.05) 4. The rimless trays were more retentive generally, than the rimmed trays except 2 case: upper tray group-all area / 2 mm. intervals and lower tray group-margin only / 2 mm. intervals.(p<.05) 5. Most of the adjustable trays were showed higher retentive force than perforated metal tray except the lower group that perforated on the all area at intervals of 2 mm.
Dental Arch
10.Vesicocutaneous Fistula Presenting Groin Abscess and Chronic Osteomyelitis in Pubic Bone.
Sang Bum KIM ; Woong Kyo JUNG ; Dong Ik SONG ; Soon Hyuck LEE
Clinics in Orthopedic Surgery 2009;1(3):176-179
The authors report a case of bladder fistula associated with a medial thigh cutaneous fistula and chronic osteomyelitis of the pubic bone 11 years after surgery for a pelvic bone fracture and bladder rupture. In the presenting case, despite the clinical suspicion, none of the diagnostic tools demonstrated the bladder fistula preoperatively. This case suggests that bladder repair should be prepared, even if the bladder fistula cannot be confirmed by imaging studies because the amount of urine leakage can be minimal or the fistula can close spontaneously.
Abscess/complications/*diagnosis
;
Cutaneous Fistula/complications/*diagnosis/radiography/surgery
;
Groin
;
Humans
;
Male
;
Middle Aged
;
Osteomyelitis/complications/*diagnosis/radiography
;
Pelvis/radiography
;
*Pubic Bone/surgery
;
Urinary Bladder Fistula/complications/*diagnosis/radiography/surgery